Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1994-11-04
1996-09-24
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
2503383, 2503384, 250340, 25037008, G01J 502, H01L 2702, H01L 3100
Patent
active
055593321
ABSTRACT:
A thermal imaging system (10) for providing an image representative of an amount of thermal radiation incident to the system is provided. The system (10) includes a thermal detector (28 or 30) made from a layer of temperature sensitive material forming a first element of a signal-producing circuit (54). The first element (28 or 30) has either a resistance or capacitance value depending on its temperature. The system (10) also includes an integrated circuit substrate (32) having a second element (56, 58, 62, or 64) of the signal-producing circuit (54) complementary and electrically coupled to the first element (28 or 30). The signal-producing circuit (54) may produce an output signal having a frequency. The frequency of the output signal is monitored as representing an absolute temperature of the detector (28 or 30) so as to determine the amount of thermal energy incident to the system (10).
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Beratan Howard R.
Meissner Edward G.
Donaldson Richard L.
Hannaher Constantine
Houston Kay
Kesterson James C.
Texas Instruments Incorporated
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